APA (7th ed.) Citation

Friedman, M., & Friedman, R. D. (1981). Free to choose: Personal statement (Reprint.). Penguin Books.

Chicago Style (17th ed.) Citation

Friedman, Milton, and Rose D. Friedman. Free to Choose: Personal Statement. Reprint. Harmondsworth [u.a.]: Penguin Books, 1981.

MLA (9th ed.) Citation

Friedman, Milton, and Rose D. Friedman. Free to Choose: Personal Statement. Reprint. Penguin Books, 1981.